212328-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212328-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,3,2 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 212328-81:
(8*2)+(7*1)+(6*2)+(5*3)+(4*2)+(3*8)+(2*8)+(1*1)=99
99 % 10 = 9
So 212328-81-9 is a valid CAS Registry Number.